I use 47uF and can't tell a difference. I have considered going lower and also am interested in what others have done.
THX dude.
C12 now are Oscon SA 47 µF + Wima MKS2 4.7 µF + MKP2 220 nF + C11 Pana MKP 47 nF all parallel.
C7/8 and C8/9 are still 220 µF.
I don't miss anything, but meanwhile some Nichicon Muse ES BP arrived and I'll give them a try.
Not the current values: